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The 26 pages that link to Aspect ratio, each with the reason it gives.
PixelRelated: Pixel grids have width and height, whose ratio shapes the image’s proportions.
Pterosaur flightRelated: Pterosaur wing proportions influenced lift, drag, and soaring ability.
RectangleRelated: A rectangle’s shape is determined by the ratio of its side lengths.
CinemaScopeRelated: CinemaScope widened the projected frame to roughly 2.35:1 in its early form.
High-definition televisionRelated: HD television commonly uses the wider 16:9 image shape.
Swept wingRelated: Sweep and aspect ratio jointly influence induced drag and structural design.
Michel HazanaviciusRelated: The Artist uses a nearly square frame associated with early cinema.